Literaturdatenbank
Literaturdatenbank |
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Orueta, J. F., & Ramos, Y. A. (2001). Methods to control and eradicate non-native terrestrial vertebrate species. Nature and Environment, 118.
Added by: Admin (29 Jan 2012 12:38:43 UTC) |
| Resource type: Journal Article BibTeX citation key: FernndezOrueta2001 View all bibliographic details  |
Categories: General Keywords: Echsen = saurians, Emydidae, Habitat = habitat, invasive Arten = invasive species, Schildkröten = turtles + tortoises, Schlangen = snakes, Südwesteuropa = South-Western Europa, Technik = equipment, Trachemys, Trachemys scripta Creators: Orueta, Ramos Collection: Nature and Environment |
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| Abstract |
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Trachemys scripta elegans Many reptiles and amphibians were introduced as pets and then escaped or were released, like chameleons or the red eared turtle. Some reptiles, such as Elaphe snakes, appear to be very skilful for escaping and can survive outside their terraria for a long time. Some others, like Bufo marinus, were introduced as part of biological measures to control invertebrates in many parts of the world. Brown tree snakes, some introduced reptiles in Malta, and many others, travelled as stowaways. Besides, frog farms are introducing bullfrogs round the world. Consequences of these introductions are harmful in some of the places were they have taken place, like San Francisco bay and estuary, where there has been a decline of native frog species. Chameleon in Malta does not appear to compete with any native species, due to its arboreal niche, but introduced Natrix maura and Rana perezi currently threaten the endangered endemic Alytes muletensis in the Balearic Islands. The brown tree snake, Boiga irregularis, is a serious introduced pest on the island of Guam and other islands in the Pacific. The brown tree snake is native to Australia and New Guinea, where its effects on the native vertebrate communities are insignificant. In the 1940s the snake was introduced onto Guam. Ever since, populations of snakes on Guam have reached levels up to 100 snakes/ha. Moreover, brown tree snake has expanded as stowaways from Guam, and has reached several Pacific sites, continental USA and even Spain in Rota American naval base (Cádiz). It would not be odd that tropical reptiles like the brown tree snake could get acclimatised in some hot and wet areas of the Cádiz province. Finally, it should be noted that hibernation is a characteristic of most of herptiles. In certain situations, mortality is very important during this period, thus limiting expansion.
Added by: Admin |